Adjustable window grille



Dec. 19, 1967 A. UDlN 3,358,741

ADJUSTABLE WINDOW GRILLE Filed Feb. 24, 1966 2 Sheets-Sheet 2 f8 C o G 29 Erg.. .3. l 54 INVENTOR Albert l/cL/'z \I` 9 BY l Arran/v .sv

United States Patent Ofi ce 3,358,741 Patented Dec. 19, 1967 3,358,741 ADJUSTABLE WINDOW GRILLE Albert Udin, 4234 Park Ave., Bronx, N.Y. 10457 Filed Feb. 24, 1966, Ser. No. 529,740 2 Claims. (Cl. 160-161) This invention relates to adjustable grilles for serving as guards in connection with rear openings in trucks, doors, windows and similar openings, particularly wherein said grille is adjustable within limits to the length thereof. And the present invention is an improvement over the disclosure of copending application Ser. No. 387,566 filed Aug. 5, 1964 now Patent No. 3,25 8,061.

The primary object of the present invention is to economically produce a grille of this kind which is adjustable while having qualities present in Va xed grille, such as vertical -bars mounted in conjunction with the grille structure.

A further object is to provide a grille of this kind with means to prevent tampering with the movable grille members at the bottom thereof.

Another object is to provide a collapsible grille construction of the lazy tong type which is readily extensible and collapsible and when collapsed may be positioned in a space greatly reduced from the space originally occupied when extended so that the collapsed grilled may be compactly positioned immediately adjacent the side of the opening in a relatively unobstructive, obscure manner.

For further comprehension of the invention and of the objects and advantages thereof, reference will be had to the following description and accompanying drawings, and to the appended claims in which the various novel features of the invention are more particularly set forth.

In the accompanying drawings forming a material part of this disclosure:

FIGURE 1 is a plan View of the tended position,

FIG. 2 is a similar view of a collapsed condition,

FIG. 3 is an enlarged fragmentary perspective front view of the bottom end of the grille, parts being shown broken away,

FIG. 4 is a sectional view taken on the line FIG. l,

FIG. 5 is an enlarged sectional view taken on the line 5 5 of FIG. 1,

FIG. 6 is a similar view FIG. 3,

FIG. 7 is a similar view taken on the line 7 7 of FIG. l and;

FIG. 8 is a perspective view of a modified form of linkage and joint there-between.

Referring now in detail to the various views of the drawings wherein similar parts are indicated by similar reference numerals, in FIG. 1 there is shown an adjustable grille embodying the invention and designated generally at 10.

The grille 10 comprises a rectangular-shaped framework including side fra-me members and bottom and top frame members. The side frame members are in the form of vertical channel-shaped Stiles 12 and 14, the bottom frame members in the form of pairs of flat metal bars 16, 16 and 1S, 18 and the top frame members in the form of pairs of flat metal bars 21, 21 and 23, 23. Midway the space between the side stiles 12 and 14 there is central upright stile 30.

Each stile 12 and 14 preferably comprises a pair of uprights 24, 24 of channel formation which have their side flanges directed towards each other. The uprights 24 are held together by rivets 26 and are maintained in spaced improved grille in exfragment of the grille in taken on the line 6 6 of relation by spacer sleeves 28 through which the rivets extend.

The central upright stile 30 comprises a pair of opposed uprights 32, 32 of channel formation which have their side flanges directed toward each other. The uprights 32 are held together at their top and bottom ends.

Each of the bars 16, 16, 18, 18, 21, 2l, 23, 23, is pivotally connected at one end by a pivot pin 31, to one end of a U-shaped strap 19, which is slidably mounted on the upright 24, 24 of the stiles 12 and 14. The other end of each bar is pivotally connected by a pivot pin 29, to one end of a short plate 25, xed midway its ends on the rivet 34.

A horizontal extensible unit indicated generally at 42 is interposed between the side stiles 12 and 14 and extends through the central stile, 30. The unit comprises linkage formed from a plurality of pairs of angularly disposed back to back links 44, each link consisting of a channelshaped bar. The links criss-cross each other as illustrated and are pivotally connected by rivets 46, at spaced intervals therealong intermediate their ends, such pivotal connections extending in horizontal lines intermediate the top and bottom ends of the stiles 12, 14, and 30. The adjacent open and bottom ends of the links 44, are pivotally connected together by rivets 48 and 50, respectively, so that a straight link linkage results. Each of the uprights 24, 24 -of the stiles 12 and 14 is formed adjacent its bottom end and top end integrally with a short flat ybar portion 38, closely spaced from the body of the upright and extending from a point adjacent the bottom of the upright to a point thereabove and remote therefrom and being turned inwardly at the top and bottom thereof, and extending from a poin-t adjacent the top of the upright to a point therebelow and remote therefrom and being turned inwardly at the top and botto-m thereof, said bar portions and the bodies of the uprights constituting a trackway 40, for guiding the sliding movement of the U-shaped straps 19, and preventing injury by such movement.

It will be noted that the bottom and top overlapped ends of the links 44, are normally disposed between the bare 16, 16, 18, 18 and 21, 21, 23, 23 when the grille is in extended position as shown in FIG. 1. This arrangement prevents tampering with, bending or otherwise damaging the grille members at the bottom and top thereof.

While one end of the links 44 is pivotally connected to the adjacent end of the other link of a pair, by means of the rivets 48 and 50, the free ends of the links 44 projecting laterally into the side stiles 12 and 14 are pivotally connected to the web portions of the uprights 24 of the stiles by the rivets 52.

In operation, the grille 10 may be adjusted horizontally within limits by pushing the side Stiles 12 and 14 toward and away from each other. When they are pushed toward each other, the center stile 30 remains in a fixed position while the links 44 are caused to pivot on the pivot pins 46, whereupon the overlapped ends of the bars 16, 16, 18, 18 ride inwardly along the trackways on the stiles 12 and 14, provided in part, by the bar portions 38, 38. The links 44 vary their angular relation to each other accordingly. The reverse action takes place upon widening the grille by pushing the side stiles 12 and 14 away from each other. The up and down movements of the U-shaped straps 19 are limited by the ends of the bar portions 38, 38.

In FIG. 8, there is shown a modified form of linkage comprising a pair of at links 44' overlapping a similar pair of at links 44 with a pivot pin 46 extending through perforations in the overlapped ends of the links.

While I have illustrated and described the preferred embodiments of my invention, it is to be understood that I do not limit myself to the precise constructions herein disclosed and that various changes and modifications may 3 be made within the scope of the invention as defined in the appended claims.

What is claimed is:

1. A grille of the character described comprising a spaced pair of vertically disposed side stiles and a central intermediate stile; each of said stiles comprising a pair of spaced opposed channel irons connected at the lower and top ends thereof, with the side flanges thereof extending inwardly toward each other, by pivot pins which extend through spacer sleeves interposed between opposed channel irons, a lazy tong grille work composed of a plurality of angularly disposed channel-shaped links arranged back to back with the flanges thereof presented outwardly and pivotally riveted together at their points of crossing and at the upper and lower ends thereof, said grille work extending between said side stiles through said central stile and pivotally connected to each of said side and central stiles, a front pair of longitudinally disposed straight at bottom and top links, a rear pair of longitudinally disposed straight flat bottom and top links, said links pivotally mounting U-shaped straps slidably mounted on the side Stiles, plates disposed transversely across the ends of the channel irons of the central stile, the other ends of the bottom and top links pivotally connected to the ends of said plates, the bottom and top pivotally connected ends of the channel links of said grille work being disposed within the space between said front and rear pairs of bottom and top links whereby access thereto is prevented. 2. A grille as delined in claim 1 characterized by pairs of guide bars mounted on the side stiles, one pair extending upwardly from the lower end of each of the channel irons of each side stile in spaced relation to the outer surface thereof with the upper and lower ends of said guide bars inturned and connected to the adjacent channel bar, another pair of guide bars extending downwardly from the top end of each of the channel irons of each side stile in spaced relation to the outer surfacevthereof with the upper and lower ends of said guide bars inturned and connected to the adjacent channel bar, said guide bars defining trackways on each side of each side stile for guiding movements of the U-shaped straps on the ends of the links.

References Cited UNITED STATES PATENTS 6/1966 Udin 160--161 1/1967 Udin 1GO-161 

1. A GRILLE OF THE CHARACTER DESCRIBED COMPRISING A SPACED PAIR OF VERTICALLY DISPOSED SIDE STILES AND A CENTRAL INTERMEDIATE STILE; EACH OF SAID STILES COMPRISING A PAIR OF SPACED OPPOSED CHANNEL IRONS CONNECTED AT THE LOWER AND TOP ENDS THEREOF, WITH THE SIDE FLANGES THEREOF EXTENDING INWARDLY TOWARD EACH OTHER, BY PIVOT PINS WHICH EXTEND THROUGH SPACER SLEEVES INTERPOSED BETWEEN OPPOSED CHANNEL IRONS, A LAZY TONG GRILLE WORK COMPOSED OF A PLURALITY OF ANGULARLY DISPOSED CHANNEL-SHAPED LINKS ARRANGED BACK TO BACK WITH THE FLANGES THEREOF PRESENTED OUTWARDLY AND PIVOTALLY RIVETED TOGETHER AT THEIR POINTS OF CROSSING AND AT THE UPPER AND LOWER ENDS THEREOF, AND GRILLE WORK EXTENDING BETWEEN SAID SIDE STILES THROUGH SAID CENTRAL STILE SAID PIVOTALLY CONNECTED TO EACH OF SAID SIDE AND CENTRAL STILES, A FRONT PAIR OF LONGITUDINALLY DISPOSED STRAIGHT FLAT BOTTOM AND TOP LINKS, A REAR PAIR OF LONGITUDINALLY DISPOSED STRAIGHT FLAT BOTTOM AND TOP LINKS, SAID LINKS PIVOTALLY MOUNTING U-SHAPED STRAPS SLIDABLY MOUNTED ON THE SIDE STILES, A PLATES DISPOSED TRANSVERSELY ACROSS THE ENDS OF THE CHANNEL IRONS OF THE CENTRAL STILE, THE OTHER ENDS OF THE BOTTOM AND TOP LINKS PIVOTALLY CONNECTED TO THE ENDS OF SAID PLATES, THE BOTTOM AND TOP PIVOTALLY CONNECTED ENDS OF THE CHANNEL LINKS OF SAID GRILLE WORK BEING DISPOSED WITHIN THE SPACE BETWEEN AND FRONT AND REAR PAIRS OF BOTTOM AND TOP LINKS WHEREBY ACCESS THERETO IS PREVENTED. 